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Search and browse all roofing guidesRoof problems
- Can You Replace Skylight Glass Without Replacing the Unit?
- The Skylight Has Not Closed in the Rain
- What Are the White Deposits on the Chimney?
- Why Are Brick Faces Landing in the Gutter?
- A Backwater Valve Will Not Stop Every Rain Leak
- A New BC Home Has a Roof Leak: Who Should You Contact?
- Carpenter Ants at the Eaves: Pest Problem or Wet Wood?
- A New Alberta Roof Leaks: How Does Warranty Reporting Work?
- Bats in the Attic: Who Comes Before the Roofer?
- Roof Water Runs Down the Driveway Into the Garage
- After an Attic Fire: Repair the Roof or Rebuild?
- A Truss Plate Looks Loose: What Needs Checking?
- Rust Below a Chimney Cap: Clean It or Replace Something?
- Who Fixes a Leak Beneath an Existing Green Roof?
- The Downspout Is Far From the House, but the Lawn Stays Wet
- The Roofer Has Closed: Is Any Roof Warranty Still Usable?
- New Roofing Smell Indoors: What Should Happen Next?
- Ceiling Leak: Roof, Plumbing or Air Conditioning?
- What a Ceiling Moisture-Meter Reading Actually Means
- Why a Window Well Fills When the Downspout Runs
- Wet Ceiling Drywall: Can It Dry or Must It Go?
- Why Straight Dark Lines Appear Across a Ceiling
- Why a Hidden Gutter Leak Needs a Different Repair
- Water in a Sun Tunnel: Leak or Condensation?
- Roof Membrane Leak or Drainpipe Leak Inside?
- Can Electronic Testing Find a Flat-Roof Leak?
- Someone Cut an Attic Truss: What Happens Now?
- Why Your Roof Leaks Only in Wind-Driven Rain
- Ponding Water on a Flat Roof: What to Document
- Why a Roof Leak Travels and Drips After Rain Stops
- A Blister in a Flat Roof Membrane
- Finding a Roof Leak When There Is No Attic Access
- Open Seams on a Low-Slope Roof
- Is That Ceiling Stain Old or Still Getting Wet?
- The Rubber Boot Around Your Roof Pipe Can Fail First
- Chimney Leak: Flashing, Mortar or the Chimney Cap?
- Why Roof-to-Wall Leaks Keep Returning
- The Small Flashing That Keeps Water Out of Siding
- Raised Roofing Nails: Small Bumps Worth Investigating
- A Roof Leak in a Newly Built Ontario Home
- A Roof Vent Can Leak Around Its Base
- Water Under a Solar Array: Who Checks What?
- Why Dormer Corners Are Difficult Leak Locations
- Water Behind the Gutter and Fascia: Trace the Roof Edge
- A Wavy Roof Deck Is Different From Wavy Shingles
- A New Roof Is Leaking: Record This Before the Callback
- Fog Between Skylight Panes Is Different From a Leak
- Why Roof Patches Keep Leaking, and When Sealant Helps
- After a Leak, What Happens to Wet Attic Insulation?
- A Stain Above the Window May Start at the Roof
- Leaks Where an Addition Meets the Original House
- What Thermal Images Can Tell You About a Roof
- How Roofers Use a Controlled Water Test
- Shingle Granules in the Gutters: How Much Is Too Much?
Winter & attics
- Why Has the Spinning Roof Vent Stopped?
- Not Enough Room for Insulation at the Eaves?
- Can Garage Air Reach the House Through the Attic?
- Can an Opening Skylight Replace a Bathroom Fan?
- Why Does the Bathroom Fan Work Better With the Door Open?
- Will a Duct-Free Bathroom Fan Remove Shower Humidity?
- Why Is the Wall Beside the Dormer Window So Cold?
- Snow-Covered Solar Panels: Wait or Arrange Service?
- The Downspout Is Clear, but Its Outlet Is Buried in Snow
- Why Roof Meltwater Can Run Across a Frozen Lawn
- Should Old Attic Insulation Come Out Before Renovation?
- The Attic Water Pipe Keeps Freezing: What Fixes It?
- A Sealed Attic Still Needs a Temperature and Moisture Plan
- Why the Insulation Label Is Not the Whole Roof R-Value
- Cellulose, Fibreglass or Mineral Wool in an Attic?
- Can Two Bathroom Fans Share One Roof Vent?
- Does Reflective Foil Help an Ontario Attic?
- Rodent Droppings in Attic Insulation: What Comes Next?
- A Ceiling Gap That Opens Each Winter: Truss Uplift?
- How Wind-Blown Snow Can Get Into an Attic
- Can a Furnace Humidifier Make Attic Frost Worse?
- Can an HRV Fix Attic Condensation?
- What a Blower-Door Test Says About Your Attic
- Cold Upstairs Bedroom: Attic or Heating Problem?
- The Attic Hatch Can Be a Large Air Leak
- Snow on the Roof: When to Get Urgent Help
- Soffit Intake and Baffles: Keep the Eave Air Route Open
- What a Roof Rake Can Reach Safely
- Attic Intake, Exhaust and Net Free Vent Area
- Can a Ridge Vent Work Without Soffit Vents?
- Should You Add a Powered Attic Fan?
- The Cold Space Behind a Knee Wall
- Why Cathedral Ceilings Need Their Own Roof Plan
- Recessed Lights and Attic Air Leaks
- Air Sealing Around a Chimney Safely
- Why an Attic Exhaust Duct Can Drip
- A Stuck Bathroom Vent Damper Can Cause Trouble
- Should De-Icing Salt Go on a Roof?
- How to Keep a Useful Attic Moisture Log
- Roof Heating Cables: Start With the Drainage Problem
- Why Attic Mould Can Return After a Roof Repair
- A Frozen Downspout Can Back Water Up
- Can You Store Boxes in the Attic?
- Icicles Above an Entrance Need an Access Plan
- Vermiculite in the Attic: Pause Before Disturbing It
- Why Snow Drifts Beside a Taller Roof
- Why Air Sealing Comes Before More Attic Insulation
- Rain on Snow Changes the Roof Assessment
- Can an Attic Have a Moisture Problem in Summer?
- What a Patchy Attic Vapour Barrier Means
- Water on the Inside of Skylight Glass
- Has Your Attic Insulation Settled Too Much?
- Why You Should Not Walk Between Attic Framing
- The Skylight Shaft Needs Insulation Too
- Ventilating a Hip Roof With Very Little Ridge
- Where a Roof Project Fits Into a Home Energy Audit
- Attic Condensation or Roof Leak? Read the Winter Clues
- Is Your Bathroom Fan Venting Into the Attic?
- Ice Dams: What Causes Them and When to Worry
Materials & installation
- Should the Plastic Strip Come Off Roof Shingles?
- Why Do the Joints in My New Shingles Line Up?
- Laminated or Tempered Skylight Glass?
- Can Shingles Go Over Wet or Wrinkled Underlayment?
- Three Skylight Ratings: Heat Loss, Solar Gain and Daylight
- A 60-Day Underlayment Rating Is Not a 60-Day Temporary Roof
- Can a Roof Be Repaired When the Shingle Is Discontinued?
- Can Roofing Go Over Wet Plywood or OSB?
- PVDF or SMP on a Metal Roof: What Are You Paying For?
- 24- or 26-Gauge Metal Roofing: Is Thicker Better?
- Snap-Lock or Mechanical Seam on a Low-Pitch Metal Roof?
- 60-Mil or 80-Mil Single-Ply Roofing: What Changes?
- Does a Small Flat Roof Need a Cover Board?
- Adhered or Mechanically Attached Membrane on an Addition?
- Can a House Have a Ballasted EPDM Roof?
- Will a Metal Roof Be Loud in the Rain?
- Oil Canning: Why a New Metal Roof Can Look Wavy
- Can Metal Roofing Go Over Existing Shingles?
- Spray Foam at the Roof Deck: What Changes?
- Steel or Aluminum Roofing: Which System Fits?
- Insulating Above the Roof Deck During Reroofing
- Can an Old Metal Roof Be Repainted?
- Rubber Roofing Shingles: What Canadian Owners Should Check
- Can Clay or Concrete Roof Tiles Handle Ontario Winters?
- Synthetic or Natural Slate for an Ontario Roof?
- Why a Controlled-Flow Roof Drain Is Slow
- A Leaking Slate Roof: Repair or Replacement?
- Roof Rejuvenation Sprays: Check Before Paying
- Polymer-Modified Shingles: What Does SBS Change?
- Fire-Resistant Roofing Needs More Than Rated Shingles
- Architectural or Three-Tab Shingles: What Changes?
- What an Impact-Resistant Shingle Rating Actually Says
- Shingle Wind Ratings on Exposed Lakeshore Roofs
- Sliding Snow and Snow Guards on a Metal Roof
- Choosing a Shingle Colour Beside Existing Brick
- Will Lighter Shingles Make Your Upstairs Cooler?
- Why New Shingles Can Look Patchy
- Tapered Insulation Helps a Flat Roof Drain
- Why Newly Installed Shingles May Not Lie Flat Yet
- Parapet Coping: The Cap Above the Roof Membrane
- Shingle Blisters Are Not the Same as Hail Marks
- Why Flat-Roof Flashing Must Turn Up at Walls
- Curling and Cupping Shingles: What Is Changing?
- Roofing in a Heat Wave: Work Plans and Shingle Scuffs
- SBS or EPDM for a Small Residential Flat Roof?
- Buckled Shingles Can Start Below the Shingles
- TPO and PVC Are Different Single-Ply Roof Systems
- Synthetic Underlayment or Felt Under Shingles?
- Torch-Applied or Self-Adhered Modified Bitumen?
- Should Ice-and-Water Membrane Cover the Whole Roof?
- Can a Coating Extend This Flat Roof's Service Life?
- Will Peel-and-Stick Membrane Bond to an Old Roof Deck?
- Finding Wet Insulation Under a Flat Roof
- Plywood or OSB for a Roof Deck?
- Old Plank Decking Under New Shingles
- Mixing Gutter Metals Can Cause Corrosion
- A Roof Deck Must Leave the Waterproofing Serviceable
- Why Starter Shingles Are a Separate Roof Component
- Curb-Mounted or Deck-Mounted Skylight?
- Ridge Caps Are Not Just Leftover Shingles
- Drip Edge at the Eave and Rake: Different Details
- Open Metal Valley or Closed Shingle Valley?
- Should Old Roof Vents Stay With New Shingles?
- Why Roofing Nail Length Depends on the Roof Deck
- Can Existing Flashing Stay During Reroofing?
- What an Overdriven Roofing Nail Does to a Shingle
- Replace the Roof or Siding First?
- Sun Tunnel or Skylight for a Dark Hallway?
- Exposed-Fastener Metal Roofs Need a Maintenance Plan
- Why Some Chimneys Need a Cricket Behind Them
- Why Standing-Seam Metal Roofs Need Room to Move
- Can Shingles Go on That Low-Slope Porch Roof?
- Should an Aging Cedar Roof Be Treated?
- Where Shingles Meet a Flat Roof
- Adding Equipment to a Flat Roof Needs More Than a Hole
- Can You Replace Roof Shingles in an Ontario Winter?
- Asphalt vs. Metal vs. Cedar: Which Roof for Which House?
- Steep-Pitch Roofing: What an 8/12 Slope Really Means
- Replacing One Half of a Semi-Detached Roof
Maintenance
- The Shallow Dip in Your Side Yard Has a Drainage Job
- A New Patio Can Change Where Roof Water Goes
- Should Roof Water Enter the Foundation Drain?
- Sticky Spots on Shingles: Sap or Something Else?
- Can Bird Droppings Be Cleaned Off a Roof Safely?
- The Yard Drain Beside Your Downspout Needs Maintenance Too
- Why Water Erodes Soil Beyond the Downspout Splash Pad
- Black Streaks on White Gutters: Clean or Replace?
- A Skylight Has Not Been Serviced in Years: Where to Start
- Is Your Buried Roof-Water Soakaway Working?
- Leaves Under Solar Panels: Include Them in the Fire Plan
- Will a Rain Barrel Supply Enough Water for Your Garden?
- Capping the Old Pipe After Downspout Disconnection
- Can Roof Water Go Onto a Septic Bed?
- Can Your Downspout Feed a Rain Garden?
- A Dryer Vents Through the Roof: Who Cleans the Cap?
- Should Roof Runoff Drain Toward a Ravine?
- Can Roof Runoff Water Your Vegetable Garden?
- Standing Water in a Gutter: Does Slope Matter?
- Keep a Roof Record That the Next Owner Can Use
- Gutter Seam Leaks: Repair the Joint and Check Movement
- Loose Gutters, Rotten Fascia and the Right Repair Order
- Five- or Six-Inch Gutters? Check the Outlet Too
- A Blocked Flat-Roof Drain Needs Prompt Attention
- Where Downspouts Commonly Block
- What a Flat-Roof Overflow Scupper Is For
- A Downspout Goes Underground: Where Does It Go?
- Can a Downspout Drain Toward Your Neighbour?
- Keeping Downspout Water Off a Walkway
- Roof Valley Leaks: Leaves, Spring Seeds and Hidden Damage
- A Rain Barrel Still Needs an Overflow Plan
- Disconnecting a Rain Barrel Before Winter
- Tree Pruning for Roof Drying and Clearance
- Planning Roof Maintenance on an Occupied Rental
- Old Satellite-Dish Mounts Can Leave New Leaks
- Which Gutter Guards Struggle With Pine Needles?
- Gutter Guards and Strainers: Cleaning Access and Winter Ice
- When Valley Runoff Shoots Over the Gutter
- Should a Downspout Empty Onto a Lower Roof?
- Protecting a Flat Roof From Repeated Foot Traffic
- Why a Downspout Makes That Loud Dripping Noise
- Can Gutters Be Cleaned From the Ground?
- Ash on a Roof After Wildfire Smoke
- Hanging Holiday Lights Without Damaging the Roof
- Wildlife at the Soffit: Exclusion Before Repair
- Bird Nesting at a Roof Vent
- What a Drone Roof Inspection Cannot See
- A Roof Maintenance Plan Without Ladders
- A Fall Roof Check You Can Do From the Ground
- Black Roof Streaks or Moss? Know Before You Clean
- Why Clean Gutters Overflow, Even Over the Front Door
- Your Eavestrough Is Damaging Your Foundation
Planning & costs
- How to Identify an Old Skylight Without an Invoice
- How Should You Compare a Roof Loan With a Line of Credit?
- Do Ontario Homeowners Need a Holdback on Roofing Work?
- A Gap Beside the Attic Party Wall: What Needs Checking?
- Can a Soakaway Take Your Roof Water?
- Your Roofer Stops Mid-Job: What Should You Do First?
- Can an Unused Chimney Be Removed Below the Roof?
- A Condo Roof Special Assessment: What Should You Check?
- Which Skylight Blind Cuts Glare While Keeping Daylight?
- Removing a Skylight: What Has to Close Above and Below?
- Is an Enhanced Roof Warranty Worth Paying For?
- Can a Sump Pump and Downspout Share an Outlet?
- Buying a Condo: Check the Roof in the Reserve Study
- Adding a Second Storey: Start Below the Roof
- What to Collect for a Shingle Manufacturer Warranty Claim
- Can You Extend the Roof Overhang During Reroofing?
- What Does a Prorated Roof Warranty Actually Pay?
- Hiring a Quebec Roofer: Which RBQ Licence Should You Check?
- Quiet Bathroom Fans: Compare Sones and Airflow Separately
- Can Shingles and Roof Accessories Use Different Brands?
- Coastal BC Reroofing: Check the Roof-to-Wall Junction
- Can You Darken a Sun Tunnel for Daytime Sleep?
- Reroofing Around a Power Mast: Who Coordinates the Work?
- How Much Winter Light Can One Sun Tunnel Deliver?
- A Roof Leak Makes Home Unsafe: Who Pays for a Hotel?
- Attached or Detached Carport: Compare the Roof Connections
- A Downspout Hidden Under the Deck Still Needs an Exit
- Should You Tell Your Insurer Before Changing the Roof?
- Ontario Roof Estimates and the Ten-Percent Rule
- Can Permeable Paving Receive Downspout Water?
- The Insurer Approves One Roof Slope: Document the Scope Gap
- A Roof Contract With No Start Date: Settle the Schedule
- Can Roof Rainwater Supply Toilets in a Canadian Home?
- Would a Cistern Help More Than Another Rain Barrel?
- One Large Skylight or Two Smaller Ones?
- What Needs Checking Before an Attic Renovation Is Closed In?
- Will Exterior Wall Insulation Make the Eaves Too Short?
- Does Renting or Company Ownership Change a Roof Warranty?
- Ontario Attic Rebates: Choose the Right Route
- Venting a Range Hood Through the Roof
- Rain Chain or Downspout Beside an Ontario Entrance?
- Adding a Patio Roof: Plan the Height and Water Route
- Can Your Unfinished Attic Become a Bedroom?
- Dormer or Roof Window: What Does the Room Need?
- Solar Shingles in Ontario: Check the Actual Offer
- Can a Roof Window Provide Bedroom Egress?
- Could Your Garage or Addition Support a Green Roof?
- Hip or Gable Roof for an Addition or Garage?
- How to Check a Roofer's Liability Insurance
- Checking WSIB Status Before Roof Work
- Transferring a Roof Warranty When a House Sells
- Planning Roof Payments Around Clear Milestones
- Why an Insurer Asks the Age of Your Roof
- Roofing Contracts Signed at Home in Ontario
- Hidden Roof Layers, Rotten Decking and the Change Order
- Roof Replacement Cost and Depreciation in Insurance
- Roof Measurements, Squares and Waste: Compare Two Estimates
- Building a Roof Replacement Reserve
- Roofing Weather Delays and Tear-Off Protection
- Roof Repairs Before Selling: Organise the Facts
- Why Some Roof Replacements Take More Than a Day
- Who Maintains a Condominium Townhouse Roof?
- Can You Stay Home During Roof Replacement?
- Roof Work on a Freehold Townhouse With Tight Access
- Planning Roofing Day With Children and Pets
- Protecting a Garden During Roof Tear-Off
- Putting a Roofing Bin on the Driveway
- Changing Roof Materials on a Heritage Property
- What a Good Roofing Nail Cleanup Includes
- Could Old Roofing Materials Contain Asbestos?
- Why Roof Replacement Can Leave Debris in the Attic
- Where Tear-Off Shingles Go: Disposal, Transfer and Recycling
- Who Will Actually Be Working on Your Roof?
- Removing and Reinstalling Solar Panels for Roof Work
- The Roof Walkthrough Before Final Payment
- Reroofing Beneath a Leased Solar System
- Roofing Photos to Request Before Work Is Covered
- Adding an Antenna Without Improvising Roof Holes
- Toronto Downspout Exemptions: What to Check
- Where Should Shingles Be Stored Before Installation?
- Before a Winter Trip, Make a Roof Response Plan
- Replace an Old Skylight When Reroofing?
- When a Roof Callback Turns Into a Disagreement
- Planning a Roof Replacement Before a Future Addition
- Do You Need a Permit to Replace Shingles in Ontario?
- Roof Warranties: Who Covers What?
- Repair or Replace Your Roof? Ask These Questions
- Should You Replace Your Roof Before Solar Panels?
- How Long Does a GTA Roof Actually Last?
- Reading a Roofing Quote: What the Lines Actually Mean
- What a Pre-Purchase Roof Inspection Actually Finds
Storm response
- A Tornado Damaged the Roof: When Can You Go Back?
- A Chimney Fire Is Out. Does the Roof Need Checking?
- Roof Ice Above a Gas Meter or Appliance Vent
- What to Check After Freezing Rain
- Storm Damage or Wear: Preparing a Roof Claim File
- How to Photograph Storm Damage From the Ground
- A Branch Hit the Roof: Look Beyond Missing Shingles
- After Wind, Listen for Loose Metal at the Roof Edge
- Suspected Lightning Strike at the Roof
- Water Near a Ceiling Light: Electrical Safety First
- Missing Shingles After Wind: What Needs Attention Now?
- Emergency Roof Tarping in an Ontario Ice Storm